E02B 7/20
Movable barrages
Official title: Movable barrages; Lock {or dry-dock} gates
E02B7/20 (Movable barrages) appears on 300 US grants and 237 published applications in this corpus.
Search patents in E02B- Granted patents
- 300
- Published applications
- 237
- Assignees
- 135
- Inventors
- 491
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 8 | 0 |
| 2002 | 4 | 1 |
| 2003 | 2 | 11 |
| 2004 | 5 | 3 |
| 2005 | 2 | 5 |
| 2006 | 5 | 6 |
| 2007 | 4 | 5 |
| 2008 | 4 | 3 |
| 2009 | 1 | 4 |
| 2010 | 3 | 2 |
| 2011 | 1 | 5 |
| 2012 | 2 | 10 |
| 2013 | 7 | 15 |
| 2014 | 13 | 17 |
| 2015 | 14 | 18 |
| 2016 | 24 | 21 |
| 2017 | 16 | 19 |
| 2018 | 14 | 15 |
| 2019 | 21 | 16 |
| 2020 | 15 | 9 |
| 2021 | 8 | 11 |
| 2022 | 9 | 14 |
| 2023 | 11 | 6 |
| 2024 | 8 | 7 |
| 2025 | 9 | 6 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E02B 7/40Swinging or turning gates124
- E02B 7/26Vertical-lift gates85
- E02B 7/205Barrages controlled by the variations of the water level59
- E02B 7/54Sealings for gates56
- E02B 7/50Floating gates34
- E02B 7/22Stop log dams23
- E02B 7/38Rolling gates or gates moving horizontally in their own plane13
- E02B 7/52Equipment preventing vibration of gates4
All 9 subgroupsShow fewer
Recent patents
- Diversion point water delivery control system1 Sep 2026US 12,723,361 B2CJC Holdings, LLC
- Composite fluid retaining barrier system28 Jul 2026US 12,692,676 B2SNBC Inc.
- Sluice gate16 Jun 2026US 12,655,910 B2
- Sluice gate for a hydropower station26 May 2026US 12,637,822 B2ANDRITZ HYDRO GmbH
- System for selectively closing a fluid channel25 Nov 2025US 12,480,583 B1
- Systems and methods for blocking a surge of water24 Sep 2026US 2026/0286632 A1The Texas A&M University System
- Systems and methods for blocking a surge of water24 Sep 2026US 2026/0286633 A1The Texas A&M University System
- Systems and methods for blocking a surge of water24 Sep 2026US 2026/0286634 A1The Texas A&M University System
- Systems and methods for blocking a surge of water24 Sep 2026US 2026/0286635 A1The Texas A&M University System
- Flood barrier wall using double airbag and construction method therefor13 Aug 2026US 2026/0234883 A1Daedo Entech Co., Ltd.
Most cited
By later US patents
- Liquid and flood water barrier wall forming-apparatus58US 5,460,462 A1995
- Automatic flood gate52US 6,623,209 B1Floodbreak, L.L.C. · 2003
- Foundation flood gate with ventilation47US 6,287,050 B1Smart Vent, Inc. · 2001
- Liquid level control system and method of operating the same46US 4,772,157 A1988
- River bank flood barrier46US 6,042,301 A2000